在摩托车设置上的重复制动和加速器操作期间的神经调整
Michel Marina1, Priscila Torrado1, Jacques Duchateau2
1Research Group in Physical Activity and Health (GRAFAiS), Institut Nacional d'Educació Física de Catalunya (INEFC) - Universitat de Barcelona (UB), Barcelona, Spain.
International journal of sports medicine
|December 14, 2023
概括
摩托车手的神经肌肉变化表明,在疲劳任务中,脊柱上神经机制,而不是外围疲劳,限制了表现. 这项研究揭示了摩托车人体工程学和耐力方面的关键见解.
科学领域:
- 神经肌肉生理学 神经肌肉生理学
- 运动科学 运动科学
- 摩托车人体工程学 摩托车人体工程学
背景情况:
- 道路赛车摩托车涉及重复的,疲劳的行动.
- 了解神经肌肉适应对于骑手的表现和伤害预防至关重要.
研究的目的:
- 在模拟间歇性疲劳任务中研究神经肌肉变化,模仿摩托车运动.
- 确定在这些任务中表现的主要限制因素.
主要方法:
- 二十八名参与者执行了一项任务,涉及到最大和最小的车拉动和加速器动作,直到失败.
- 测量包括最大自发收缩 (MVC) 力量,表面电肌图 (EMG),最大M波 (Mmax) 和H反射在 flexor digitorum superficialis.
- 在疲劳任务之前,期间和之后评估神经肌肉参数,并进行10分钟的恢复期.
主要成果:
- 任务后MVC力和EMG活动显著下降 (46%和26%).
- 在任务期间,力量波动和EMG活动增加了 (106%和61%).
- H-反射幅度显著增加 (149%) 并与EMG活性相关,而Mmax保持不变,表明脊上干涉.
结论:
- 脊上神经机制,而不是外围因素,似乎是模拟摩托车任务的主要限制.
- 这些发现与之前的一些研究形成了对比,并突出了这项运动的特定神经肌肉需求.
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